<template>
	<view class="uni-navbar" :class="{ 'uni-navbar--hide': !show, 'uni-navbar--show': show }">
		<view
			:class="{ 'uni-navbar--fixed': fixed, 'uni-navbar--shadow': border, 'uni-navbar--border': border }"
			:style="{ 'background-color': backgroundColor }"
			class="uni-navbar__content"
		>
			<uni-status-bar v-if="statusBar" />
			<view :style="{ color: color }" class="uni-navbar__header uni-navbar__content_view">
				<view class="uni-navbar__header-btns uni-navbar__content_view" @tap="onClickLeft">
					<view v-if="leftIcon.length" class="uni-navbar__content_view"><uni-icons :type="leftIcon" :color="color" size="28" /></view>
					<view v-if="leftText.length" :class="{ 'uni-navbar-btn-icon-left': !leftIcon.length }" class="uni-navbar-btn-text uni-navbar__content_view">
						{{ leftText }}
					</view>
					<slot name="left" />
				</view>
				<view class="uni-navbar__header-container uni-navbar__content_view">
					<view v-if="title.length" class="uni-navbar__header-container-inner uni-navbar__content_view">{{ title }}</view>
					<!-- 标题插槽 -->
					<slot />
				</view>
				<view :class="title.length ? 'uni-navbar__header-btns-right' : ''" class="uni-navbar__header-btns uni-navbar__content_view" @tap="onClickRight">
					<view v-if="rightIcon.length" class="uni-navbar__content_view"><uni-icons :type="rightIcon" :color="color" size="28" /></view>
					<!-- 优先显示图标 -->
					<view v-if="rightText.length && !rightIcon.length" class="uni-navbar-btn-text uni-navbar__content_view">{{ rightText }}</view>
					<slot name="right" />
				</view>
			</view>
		</view>
		<view v-if="fixed" class="uni-navbar__placeholder">
			<uni-status-bar v-if="statusBar" />
			<view class="uni-navbar__placeholder-view" />
		</view>
	</view>
</template>

<script>
import uniStatusBar from '../uni-status-bar/uni-status-bar.vue';
import uniIcons from '../uni-icons/uni-icons.vue';

export default {
	name: 'UniNavBar',
	components: {
		uniStatusBar,
		uniIcons
	},
	props: {
		show: {
			type: [Boolean, String],
			default: true
		},
		title: {
			type: String,
			default: ''
		},
		leftText: {
			type: String,
			default: ''
		},
		rightText: {
			type: String,
			default: ''
		},
		leftIcon: {
			type: String,
			default: ''
		},
		rightIcon: {
			type: String,
			default: ''
		},
		fixed: {
			type: [Boolean, String],
			default: false
		},
		color: {
			type: String,
			default: '#FFFFFF'
		},
		backgroundColor: {
			type: String,
			default: '#FFFFFF'
		},
		statusBar: {
			type: [Boolean, String],
			default: false
		},
		shadow: {
			type: [String, Boolean],
			default: true
		},
		border: {
			type: [String, Boolean],
			default: true
		}
	},
	methods: {
		onClickLeft() {
			this.$emit('click-left');
		},
		onClickRight() {
			this.$emit('click-right');
		}
	}
};
</script>

<style>
@charset "UTF-8";
.uni-navbar {
	position: fixed;
	width: 100%;
	z-index: 1;
	transition: all 0.1s;
}
.uni-navbar--hide {
	transform: translateY(-94px);
	transition: all 0.1s;
}
.uni-navbar--sow {
	transform: translateY(0);
}
.uni-navbar__content {
	display: block;
	position: relative;
	width: 100%;
	background-color: #ec706b;
	overflow: hidden;
}

.uni-navbar__content .uni-navbar__content_view {
	display: flex;
	align-items: center;
	/* overflow: hidden;
	white-space: nowrap;
	text-overflow: ellipsis; */
}
.uni-navbar__header-container-inner {
	width: 100%;
	font-size: 16px;
	line-height: 20px;
	justify-content: center;
}

.uni-navbar__header {
	display: flex;
	flex-direction: row;
	width: 100%;
	height: 44px;
	line-height: 44px;
	font-size: 16px;
}

.uni-navbar__header-btns {
	display: inline-flex;
	flex-wrap: nowrap;
	flex-shrink: 0;
	width: 100upx;
	padding: 0 12upx;
}

.uni-navbar__header-btns:first-child {
	padding-left: 0;
	/* margin-top: -12upx; */
}

.uni-navbar__header-btns:last-child {
	width: 110upx;
}

.uni-navbar__header-btns-right:last-child {
	width: 110upx;
	text-align: right;
	flex-direction: row-reverse;
	justify-content: center;
}

.uni-navbar__header-container {
	width: 100%;
	margin: 0 10upx;
	justify-content: center;
}



.uni-navbar__placeholder-view {
	height: 44px;
}

.uni-navbar--fixed {
	position: fixed;
	z-index: 998;
}

.uni-navbar--shadow {
	/* box-shadow: 0 1px 6px #ccc; */
}

.uni-navbar--border:after {
	display: none;
	position: absolute;
	z-index: 3;
	bottom: 0;
	left: 0;
	right: 0;
	height: 1px;
	content: '';
	-webkit-transform: scaleY(0.5);
	transform: scaleY(0.5);
	background-color: #e5e5e5;
}
.uni-navbar-btn-text.uni-navbar__content_view{
	font-size: 14px;
}
</style>
